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Heat exhaustion — DIPIMC MCQ

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EasyEnvironmental MedicineHeat exhaustionDIPIMCDipIMC

During a heatwave, an outdoor worker feels faint, nauseated and has a headache, with profuse sweating, a preserved level of consciousness and a core temperature of 38.5 degrees Celsius. What is the most appropriate management?

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Correct answer: B — Move him somewhere cool and give oral fluids

The picture of faintness, nausea, headache and sweating with a preserved level of consciousness and a temperature below 40 degrees Celsius is heat exhaustion, managed by moving the person to a cool environment, resting them, replacing fluids orally and monitoring for progression. Cold-water immersion is reserved for heat stroke with neurological dysfunction, and antipyretics are unhelpful. Returning him to work or dismissing the symptoms risks progression to heat stroke. Pearl: heat exhaustion can progress to heat stroke, so watch for any change in mental state or a rising temperature.

Reference: JRCALC Clinical Guidelines; Resuscitation Council UK Guidelines 2025 (First Aid)